Cover mounting and locking means for tanks



pxr 22, wm. F. A. HoLBY COVER MOUNTING AND LOCKING MEANS FOR TANKS Filed Aug. 10, 1939 trucks, for example, and has as its object to propossibility of universal tilting relative to stem 30.

Patented Apr. 22, 1941` OFFiCE.

oNlTso STATES P r2,239,326 oovnn MOUNTING AND LOCKING MEANS Foa TANK Frank A. Holby, Riverside, Conn., assigner to The William F. Kenny Company, New York, N. Y., a corporation of New York Application August 10, 1939, Serial No. 289,486 2 claims. (o1. 292-336) This invention relates to cover mounting and 23 and locked by a nut 33 with the coverl 25 spaced locking means for tanks,such as the tanks of tank from arm I9 sufficiently so that the cover has the vide such means facilitating the locking opera- Y A bell crank lever 3i is pivoted at its angle cention. To this end, I provide means for holding 5 trally of pin 24. One portion 35 of lever 34 exthe locking means in operated position when the tends above and along arm IS, as shown in Figure cover is opened, the holding means being auto- 2, the other portion 36 of the lever extending matically released as the cover moves to closed downwardly and carrying, between its tWo side position. webs 31 and 38, a pin 39, parallel to pin 2d, on

A practical and illustrative embodiment of the lo which is mounted a roller III for cooperation with invention is shown in the accompanying drawing catch member It. Portion 36 has a web 4I conwith reference to which I shall proceed with the fleeting Webs 3l and 38, and having en Opel-ling 42 description. In the drawing: formed therein presenting a straight bottom edge Figure l is a plan View of mounting and locking 43. means in accordance with the invention. l5 A latch 44 is mounted in longitudinally ex- Figure 2 is a section substantially on line 2--2 tending lrelation on web 23, the head end of the of Figure l, and latch projecting through opening 42 and being Figure 3 is a view similar to that of Figure 2, provided with a shoulder 45. At its other end, but showing the parts in diierent relation. latch 44 has a perforation in which is engaged Referring to the drawing, reference numeral Io 2o a bolt 46 which is secured in web 23. The bolt designates the shell of a tank and reference nuis loosely received in the perforation So that meral Il a top opening in one of the tank oompivoting of the latch is permitted. A Comprespartments. A plate i2 has a peripheral flange I3 SiOIl Spring 47 iS diSPOSed between the head 0i conformed to the margins of the opening and the bolt and the latch and tends to depress the secured to the shell by rivets. Plate I2 has a cir- 25 latter. cular central opening I3', In Figures 1 and 2, the roller 4t is engaged On the forward side of opening I3', an upstandwith surface I1 of keeper I6. The roller is ing member I4 is xed to plate I2 and supports forced against Surfaee l1 by e Spring 43 Whieh a bearing I5 whose axis is normal to the central has end coils surrounding pin 24 between bars vertical longitudinal plane of the tank. Directly 30 2| and 22 and lever 34, the spring having a bale opposite upright I4, a catch member or keeper It portion engaged over lever portion 35 and tendis secured to plate I2, this catch member having ing t0 move the latter toward arm I9. With the a lower surface I1 sloped downwardly away from parte in this relation, the oover is held Securely opening I3 and a @am surface I8 which is sloped closed and it will be seen from Figure 2 that unupwardly and away from opening I3. 35 der this condition the nose of latch 44 rests on An arm I9 is plvoted on a pin 2n in bearing I5 the top Side of keeper le. To open the cover, for swinging movements between the full line en upward pull is exerted on lever portion 35, so horizontal position Shown in Figure 2 and the that roller 40 moves out from under keeper II. dotted line position indicated in the same figure. AS 2mn i9 iS SWllIlg upwardly, lateh 44 is forced Arm I9 is constituted by side bars 2l and 22 con- 40 downwardly by Spring 41 so that shoulder 45 ennected by a web 23. The free extremities of bars gages Web 4| belOW edge 43, thus holding the 2l and 22 are deiiected `away from each other locking means in the operated condition shown and are pierced for the reception of a pin 24 parin Figure 3- With the Cover fully opened, arm 9,1131 to pin 20, I9 is supported just past the vertical, as indi- A cover 25 for opening I3 is provided with a 45 Called in dOited lines in Figure 2. Due to the central cylindrical socket 26 in which are rerather delicate balance of the arm in this posiceived upper and lower bushings 21 and 28, these tion, any movement of the truck will throw it being conformed to mate with the spherical suroff balance, so that the cover will return to face of a ball 29 which has xed thereto a threadclosed position. In returning to this position,

ed stem 30. Bushing 21 is threaded into socket 50 roller 4i) strikes surface I8 of the keeper, so that 26 and is retained in adjusted pos1t1on, wherein lever 34 is swung slightly in a counter-clockwise ball 29 is frictionally engaged by the bushings, by direction about pin 24, thus releasing the frica set screw 3l. Bushing 21 has an opening 32 tional engagement between shoulder 45 and the through which stem 30 is passed with extra clearface of web 4I. The nose of latch 44 then ance. Stem 3U is threaded in an opening in web 55 strikes the top of keeper I6 and web 4I moves below shoulder 45 of the arrested latch, so that the spring 43 is enabled to swing lever 34 in a clockwise direction to engage roller 4U Wiitl'i surface I1. This engagement would be effected by the weight of lever portion 35 in the absence of spring 48, but the provision of the spring is desirable as a steadying factor.

Proper seating of the cover is assured by its universal tiltability relation to arm I9 as provided by the ball and socket connection.

It will be understood susceptible of varied embodiment and that, accordingly, I do not limit myself to details of form and arrangement of parts, except as in the following claims.

I claim:

1. In combination, a member pivoted at one end, a xed keeper at the free end of said member having an angular head, means on the free end of said member engageable under the head c.'

of said keeper and releasable therefrom, said ried by said member that the invention iswhen the latter is released from the keeper, said latch having a portion positioned to strike the top of the keeper head to release the latch from said swingable means as said member swings toward said keeper.

2. In combination a member pivoted at one end, a xed keeper at the free end of said member having an angular head, means on the free end of said member engageable under the head of said keeper and releasable therefrom, said means being swingable on an axis parallel to the pivoting axis of said member, and a latch carried by said member and engaging and holding said swingab-le means in withdrawn position when the latter is released from the keeper, said latch having a portion positioned to strike the top of the keeper head to release the latch from said swingable means as said member swings toward said keeper, said head having a cam face struck 'by said swingable means as said member swings toward said keeper whereby to move said swingable means in its direction of release so as to loosen its engagement with the latch before the latter strikes the keeper.

FRANK A. HOLBY. 

